公开(公告)号：US09562691B2

公开(公告)日：2017-02-07

申请号：US14490789

申请日：2014-09-19

Applicant: ROLLS-ROYCE PLC

Inventor： Christopher Ford ,  Ashley Gavin Barker ,  Alastair Duncan Walker ,  Jonathan Carrotte

IPC: F23R3/30 ,  F23R3/14

CPC classification number: F23R3/30 ,  F23R3/14

Abstract: An airblast fuel injector is provided for a fuel spray nozzle of a gas turbine engine. The injector has an annular air passage for the passage of a swirling air flow therethrough. The swirling air flow is used by the injector to produce an atomized fuel spray. The air passage contains a swirler for producing the swirling air flow, the swirler comprising a circumferential row of vanes which span inner and outer side walls of the air passage. Viewed on a longitudinal section through the injector, the air passage has a bend downstream of the swirler, the bend changing the direction of the air passage. The vanes are configured to introduce a radial component to the air flow exiting the swirler, the radial component guiding the air flow around the bend.

Abstract translation: 为燃气涡轮发动机的燃料喷嘴提供喷气燃料喷射器。 喷射器具有环形空气通道，用于使旋流气流通过其中。 喷射器使用旋转空气流产生雾化燃料喷雾。 空气通道包括用于产生旋流空气流的旋流器，所述旋流器包括跨过空气通道的内侧壁和外侧壁的圆周排的叶片。 在通过喷射器的纵向截面上观察，空气通道在旋流器下游具有弯曲部，弯曲部改变了空气通道的方向。 叶片构造成将径向分量引入离开旋流器的空气流中，径向分量引导围绕弯曲部的气流。